Actron 9640A manual Error Messages, Vehicle Communication Fault, Operating Error or Erroneous Data

Help & Troubleshooting

PIN 2 (BAT+)			PIN 4 (GND)
PIN 6 (GND)	PIN 16 (BAT+)
LH DLC
	J1962 (OBD II) DLC
Scan Tool does not
power up.	Is	NO
	battery fully		Charge battery.
	charged?
Measure Voltage between	YES
BAT + and GND pins.
	Measure resistance
	between GND pin and
	frame ground.
NO
Above 8V?
	less than	NO	Repair Ground
YES			circuit. Refer to a
	5 ohms?		service manual.
Contact Customer	YES
Service Center.
	Open exists in power
	circuit. Check for a blown fuse
	or an open wire. Refer to a
	service manual.

ERROR MESSAGES

8Vehicle Communication Fault

If the tool exhibits a problem when com-
municating with the vehicle, a message
ENTER	ENTERToResetT10Sec,ThenPessVehicleCommFaultTurnKeyOffrChecknec<YES>OperatiAgain?ErTry rions!NOro.ol~
displays. The vehicle’s control mod-
ule(s) enters into an unrecoverable
state. Press	and the tool resets.

Operating Error or Erroneous Data

AnOperatingError orErroneousData occurs if the vehicle’s computer(s) stops communicating with the scan tool. When this happens, the scan tool prompts you to try again or return to the Function List. Make a selection and press

.

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